Rotary evaporator for collecting various solvents

Abstract

The utility model discloses a rotary evaporator for collecting various solvents, which comprises a base, a support and a heater are arranged on the base, a rotator is arranged on the support, a distilling flask matched with the heater is arranged at one end of the rotator, a communicating flask is arranged at the other end of the rotator, the communicating flask is connected with a condensing component, and the condensing component is connected with the distilling flask. The condensation assembly comprises at least two condensation pipes arranged in parallel, a main pipe communicated with the communication bottle is arranged on the communication bottle, one end of the main pipe is connected with auxiliary pipes in one-to-one correspondence with the condensation pipes through a multi-way valve, and collection bottles are arranged at the bottoms of the condensation pipes. The multi-way valve at one end of the main pipe can be used for respectively communicating the distillation bottle with a plurality of groups of condensation pipes, so that various solvents with different boiling points are collected, the waiting time is shortened, and the collection efficiency of the various solvents is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rotary evaporator technical field, concretely relates to a kind of rotary evaporator of collection multiple solvents. BACKGROUND

[0002] Rotary evaporator is a kind of extraction experimental equipment to material under reduced pressure distillation concentration, is widely used in sample scale concentration, drying, extraction recovery etc.

[0003] The principle of rotary evaporator is mainly through constant speed rotary distillation bottle to make solvent form film, increase evaporation area, while evaporation flask is placed in water bath or oil bath pot constant temperature heating in rotation, heating temperature can approach the boiling point of the solvent, so that bottle solution is heated diffusion under negative pressure and evaporates, realizes the rapid evaporation of solvent.

[0004] However, the existing rotary evaporator mainly considers the collection of single solvent, and the solution in distillation flask often contains multiple solvents with different boiling points. When collecting multiple solvents, the equipment needs to be turned off after the separation of one solvent, and the collection bottle needs to be repeatedly operated to collect another solvent after the collection of the solvent in the collection bottle is completed. In this process, there is a lot of residue in the condenser tube, and the collection bottle needs to be removed after the condensed liquid is collected to collect the next solvent, which takes a long time and is complicated to operate. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of rotary evaporator of collection multiple solvents, through the multi-way valve of main pipe one end can respectively with multiple condenser pipes of distillation bottle lead through, to multiple solvents with different boiling points is collected, reduce waiting time, improve the collection efficiency of multiple solvents.

[0006] To achieve the above object, the technical scheme adopted by the utility model is as follows: a kind of rotary evaporator of collection multiple solvents, including base, the base is equipped with support and heater, the support is equipped with rotator, rotator one end is equipped with with the heater matched distillation bottle, the other end of the rotator is equipped with connecting bottle, the connecting bottle is connected with condensing assembly, the condensing assembly includes at least two parallelly arranged condenser pipes, the connecting bottle is equipped with with its communication main pipe, the one end of the main pipe is connected with with each condenser pipe one-to-one corresponding auxiliary pipe by multi-way valve, the bottom of the condenser pipe is equipped with collection bottle.

[0007] The utility model discloses further improve scheme is still including vacuum pump, be equipped with the vacuum interface on the main pipe, the working end of vacuum pump is connected with the vacuum interface through the vacuum pipe.

[0008] The utility model discloses further improve scheme is, the lateral wall of condensing pipe is equipped with liquid inlet and liquid outlet, the inside of condensing pipe is equipped with spiral cooling pipe, both ends of spiral cooling pipe are connected with liquid inlet and liquid outlet respectively.

[0009] The utility model discloses further improve scheme is, in arbitrary adjacent two condensing pipes, the liquid outlet of one condensing pipe is communicated with the liquid inlet of another condensing pipe through the connecting pipe, and the both ends of all condensing pipes are communicated through the connecting pipe, and the spiral cooling pipe of all condensing pipes is connected in sequence and forms circulation pipeline through the connecting pipe, be equipped with circulating water chiller on circulation pipeline.

[0010] The utility model discloses further improve scheme is, condensing pipe is equipped with three.

[0011] The utility model discloses further improve scheme is, be equipped with the air release valve on the intercommunication bottle.

[0012] The utility model discloses further improve scheme is, and the lower extreme of collecting bottle is equipped with the liquid release valve.

[0013] The utility model discloses the beneficial effect lies in:

[0014] The utility model discloses through the multi -way valve of main pipe one end can with the condensing pipe of multiple groups of distillation bottle respectively and lead, to the collection of multiple different boiling point solvent, reduce the waiting time, improve the collection efficiency of multiple solvent.

[0015] The utility model discloses through adjusting the internal vacuum degree of rotary evaporator and reduces the boiling point of different solvent, can make different solvent respectively from the condensed liquid and get collection under the condition that not changing the heating temperature of heater, simple operation and practical.

[0016] The utility model discloses through being connected with vacuum pump on the main pipe, can carry out vacuumizing operation through the same vacuum pump when the multi -way valve switches different condensing pipe and distillation bottle lead, improves the equipment utilization.

[0017] The utility model discloses, all spiral cooling pipes of condensing pipe are connected through connecting pipe and form circulation pipeline in proper order, compared with each condensing pipe is equipped with independent circulating water chiller, all condensing pipes in the utility model are located in same circulation pipeline, can realize temperature control of all condensing pipes through a circulating water chiller, improve equipment utilization, reduce equipment cost, and circulation pipeline passes from all condensing pipes, when controlling multi -way valve switches different condensing pipe and distillation flask and leads on, the temperature of this condensing pipe has been in proper low temperature, can condense steam in first time, improve collection efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 It is the structure front view schematic drawing (the vacuum pump and circulating water chiller are not shown in the drawing) of the utility model.

[0019] Fig. 2 It is the structure overhead schematic drawing (the circulating water chiller is not shown in the drawing) of the utility model.

[0020] Fig. 3 It is the circulation pipeline schematic drawing of the utility model.

[0021] In the drawing, 1 - base, 2 - support, 3 - heater, 4 - rotator, 5 - distillation flask, 6 - communicating bottle, 7 - condensing pipe, 8 - main pipe, 9 - multi -way valve, 10 - branch pipe, 11 - collection bottle, 12 - vacuum pump, 13 - vacuumizing pipe, 14 - spiral cooling pipe, 15 - circulating water chiller, 16 - air release valve, 17 - liquid release valve. DETAILED DESCRIPTION

[0022] The utility model is further illustrated below in connection with the drawings and specific embodiment. EMBODIMENT

[0023] In connection with Figs. 1-3 It can be known that a rotary evaporator for collecting multiple solvents includes a base 1, a support 2 and a heater 3 arranged on the base 1, a rotator 4 arranged on the support 2, a distillation flask 5 arranged at one end of the rotator 4 and matched with the heater 3, a communicating bottle 6 arranged at the other end of the rotator 4, a condensing assembly connected with the communicating bottle 6, the condensing assembly including at least two condensing pipes 7 arranged in parallel, a main pipe 8 connected with the communicating bottle 6, a branch pipe 10 corresponding to each condensing pipe 7 connected with one end of the main pipe 8 through a multi-way valve 9, and a collection bottle 11 arranged at the bottom of the condensing pipe 7. The valve of the multi-way valve 9 is adjusted to control the main pipe 8 to be connected with only a specific branch pipe 10 and isolated from other branch pipes 10.

[0024] A vacuum pump 12 is also included, and the main pipe 8 is provided with a vacuum interface, and the working end of the vacuum pump 12 is connected to the vacuum interface through a vacuum pipe 13. The vacuum pump 12 promotes the rapid evaporation of the solution in the distillation flask 5 under the condition of negative pressure heating. The base 1 is also provided with a controller for controlling the vacuum pump 12.

[0025] The side wall of the condenser tube 7 is provided with a liquid inlet and a liquid outlet, and the inside of the condenser tube 7 is provided with a spiral cooling pipe 14, and the two ends of the spiral cooling pipe 14 are respectively communicated with the liquid inlet and the liquid outlet.

[0026] The liquid outlet of one of any two adjacent condenser tubes 7 is communicated with the liquid inlet of the other condenser tube 7 through a connecting pipe, and the two condenser tubes 7 located at both ends of all the condenser tubes 7 are communicated through connecting pipes, and the spiral cooling pipes 14 of all the condenser tubes 7 are sequentially connected to form a circulating pipeline through the connecting pipes, and the circulating pipeline is provided with a circulating cold water machine 15.

[0027] The cooling water flows out from the circulating cold water machine 15, enters the spiral cooling pipe 14 through the liquid inlet of the first condenser tube 7, flows out from the liquid outlet after absorbing heat, and then flows into the liquid inlet of the next condenser tube 7, and so on through each condenser tube 7. Finally, the heated cooling water flows back to the circulating cold water machine 15, where it is cooled to a set temperature, and then sent back to the first condenser tube 7, and so on. The circulating cold water machine 15 is responsible for controlling the temperature of the cooling water and maintaining the stable operation of the whole system.

[0028] Preferably, the condenser tube 7 is provided with three. Three kinds of solvents can be collected.

[0029] The heater 3 can be a water bath, an oil bath or other heaters capable of heating the distillation flask in the rotary evaporator in the prior art. The rotator 4 is a conventional rotator for driving the distillation flask to rotate in the rotary evaporator in the prior art, and the gas in the distillation flask can enter from one end of the rotator and come out from the other end, and the utility model does not involve improvement thereof.

[0030] The support 2 includes a stand and a support frame for supporting the condenser tube 7 and the collection bottle 11, and the heater is arranged on the stand and can adjust the height thereof, which is a conventional structure in the prior art, and the communication bottle 6 is provided with a gas release valve 16. The lower end of the collection bottle 11 is provided with a liquid release valve 17.

[0031] The working principle of the rotary evaporator for collecting multiple solvents provided by the utility model is as follows: when in use, first, according to the boiling points of multiple groups of solvents to be evaporated in the solution in the distillation flask 5 (for example, three groups), the heating temperature of the heater 3 is set to the boiling point temperature of the solvent with the lowest boiling point in the multiple groups of solvents to be evaporated, and different solvents are collected from low to high according to different boiling points.

[0032] When collecting the first solvent, the multi-way valve 9 is controlled to connect the distillation flask 5 with the first condenser tube 7, and the first solvent evaporated from the rotary evaporator is collected through the collecting bottle 11 below the first condenser tube 7;

[0033] When collecting the second solvent, the vacuum degree inside the rotary evaporator is reduced by the vacuum pump 12, the multi-way valve 9 is controlled to connect the distillation flask 5 with the second condenser tube 7, and the second solvent evaporated from the rotary evaporator is collected through the collecting bottle 11 below the second condenser tube 7;

[0034] When collecting the third solvent, the vacuum degree inside the rotary evaporator is reduced again by the vacuum pump 12, the multi-way valve 9 is controlled to connect the distillation flask 5 with the third condenser tube 7, and the third solvent evaporated from the rotary evaporator is collected through the collecting bottle 11 below the third condenser tube 7;

[0035] Through the above steps, different solvents can be sequentially collected, so that the boiling points of different solvents are reduced by adjusting the vacuum degree inside the rotary evaporator, different solvents are evaporated from the liquid to be concentrated and collected, the operation is simple and practical, and the collection effect of multiple solvents in the rotary evaporator is improved.

[0036] In the description of the utility model, need understanding, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and is not indicate or imply the device or element indicated must have a particular orientation, with a particular orientation structure and operation, therefore cannot be understood as the restriction of the utility model, all equivalent structures or equivalent process conversion made by using the utility model specification and drawing contents, or directly or indirectly applied in other related technical fields, all include in the patent protection scope of the utility model.

Claims

1. A rotary evaporator for collecting multiple solvents, comprising a base (1), a support (2) and a heater (3) on the base (1), a rotator (4) on the support (2), a distillation flask (5) cooperating with the heater (3) at one end of the rotator (4), and a connecting bottle (6) at the other end of the rotator (4), the connecting bottle (6) being connected to a condensation assembly, characterized in that: The condensing assembly comprises at least two condensing pipes (7) arranged in parallel, a main pipe (8) connected with the communicating bottle (6) and communicating with the communicating bottle (6), a sub-pipe (10) corresponding to each condensing pipe (7) connected with one end of the main pipe (8) through a multi-way valve (9), and a collecting bottle (11) arranged at the bottom of the condensing pipe (7).

2. A rotary evaporator for collecting a plurality of solvents according to claim 1, wherein: A vacuum pump (12) is further arranged, a vacuum interface is arranged on the main pipe (8), and a working end of the vacuum pump (12) is connected with the vacuum interface through a vacuum pipe (13).

3. The rotary evaporator of claim 1, wherein: A liquid inlet and a liquid outlet are arranged on the side wall of the condensing pipe (7), a spiral cooling pipe (14) is arranged in the condensing pipe (7), and the two ends of the spiral cooling pipe (14) respectively communicate with the liquid inlet and the liquid outlet.

4. The rotary evaporator of claim 3, wherein: The liquid outlet of one of any two adjacent condensing pipes (7) communicates with the liquid inlet of the other condensing pipe (7) through a connecting pipe, the two condensing pipes (7) arranged at the two ends of all the condensing pipes (7) communicate through a connecting pipe, the spiral cooling pipes (14) of all the condensing pipes (7) are sequentially connected through connecting pipes to form a circulating pipeline, and a circulating water cooler (15) is arranged on the circulating pipeline.

5. The rotary evaporator of claim 1, wherein: The condensing pipe (7) is provided with three.

6. The rotary evaporator of claim 1, wherein: A gas release valve (16) is arranged on the communicating bottle (6).

7. The rotary evaporator of claim 1, wherein: A liquid release valve (17) is arranged at the lower end of the collecting bottle (11).

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